Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 02:25

General

  • Target

    2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe

  • Size

    45KB

  • MD5

    2b4c8fb3e423606607c3677018e2cd4b

  • SHA1

    a405c74d0ffacc7033384b3d951ceb73edf3aeb8

  • SHA256

    2fe1db3ef4c8be357a8f1498767af645beec509ad7c0be43594baeb0a96daaf3

  • SHA512

    bfcbe74dc11fc2c121865c57783f56150c4a8b74e42470d6354b8806c40f4887f0c427a9ef945ca90a41ff9f4cc34225ec13f6be2d4b45f3f3f629a442608783

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9HkB:X6QFElP6n+gJQMOtEvwDpjBmzDkWDtY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4784

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\asih.exe

          Filesize

          45KB

          MD5

          dc29ee9a5f218b739d83ce2226349ffe

          SHA1

          f1e8fa8fe64c0fc23272a06f335529ac674e5ee5

          SHA256

          698acf8a71542aa2dc32797a508b5e124b5d9266593bb5ea9fc66ddd7b8e9c73

          SHA512

          150173a271d1c86391cc9abc2ea4298d8779aa0fe55c25150ad36b0b2d7a45fa757c5d0bd9ce49f4dac1252687c10cabc1c6bfcb1de0eee5f4c39c729961e234

        • memory/4784-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4784-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4956-0-0x0000000000560000-0x0000000000566000-memory.dmp

          Filesize

          24KB

        • memory/4956-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/4956-8-0x0000000000560000-0x0000000000566000-memory.dmp

          Filesize

          24KB